hw8_solution - EE321 Spring 08 HW8 Problem 33 Buck...

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EE321 Spring 08 HW8 Problem 33 Buck Converter Operation Consider a machine with the following parameters: r a 0.1 := k v 0.2 := The machine is fed using a buck converter with the following parameters v fsw 2.4 := v fd 2.0 := v dc 150 := d 0.7 := The machine is operating at a speed of 300 rad/s. Compute the armature current, the average switch current, the motor efficiency, the converter efficiency, and teh overall efficiency First lets find the operating point ω r 450 := v a v dc v fsw ( ) d 1 d ( ) v fd ( ) + := v a 102.72 = i a v a k v ω r r a := i a 127.2 = Aveage armature current i s d i a := i s 89.04 = Average switch Current
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